Mechanical movement.



Patented Apr. 16, 1918.

2 SHEETS*SHEY1.

C. MCCREARY.

MECHANICAL MOVEMENT.

APPLICATlON FILED AUG.2I, 1916.

C. MCCREARY.

MECHANICAL MOVEMENT. APPLICATION man Aue.2\.191`e.

Patented Apr. 16, 1918.

2 SHEETS-SHEET 2.

CHARLES MCCBEARY, OF LOS ANGELES, CALIFORNIA.

MECHANICAL MOVEMENT.

recaer?.

Specification of Letters Patent. Patented Apr. 16, V1918..

Application led August 21, 1916. Serial No. 115,946.v

T0 all whom t may concern.'

Beit known that I, CHARLES MCCREARY, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Mechanical Movement, of whichthe following is a specification.

This invention relates to improvements in mechanical movements, and moreparticularly to apparatus in which two members such as shafts may berotated in the same direction at the same speed, and their arcuaterelative positions varied during and without interfering with therotation thereof.

Another object of this invention is to provide apparatus' of thecharacter described which may be put to various uses, for example can beutilized to change the throw of a reciprocating member as a reversingvalve gear and so as to change the relative rotating positions of anytwo corresponding rotating members during the rotation thereof, such forinstance as would be the case in changing the positions of the blades ofa feathering propeller or the position of the shutters of a motionpicture camera.

Another object is to provide apparatus of the character described whichwill be of simple comparatively small construction, is easy to operateand is inexpensive to manufacture.

In the accompanying drawings:

Figure 1 represents a top plan view of my invention showing it operatingshutters such as used in a motion picture camera.

Fig. 2 is a cross sectional view taken on line 2-2, Fig. 1.

Fig. 3 is a horizontal sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a horizontal sectional view of a modified form of theinvention showing it operating blades of a feathering propeller.

Fig. 5 is a diagrammatic view showing the shafts in normal position.

Fig. 6 is a view similar to Fig. 5 showing the shafts and membersoperated thereby in partly adjusted position.

Fig. 7 is a view similar'to Figs. 5 and 6 showing the members operatedthereby in fully adjusted position.

Fig. 8 is a diagrammatic view showing the modified form in normalposition, and

Fig. 9v is a view similar to Fig. 8 showing the modified form inadjusted position,

In reference to the drawings, l. designates a base or support for theapparatus, extending upwardly, from which are opposed bearings 2 and 3in which is journaled' a rotatable shaft 4.

A pulley 5 is fixed on one end of the shaft 4 and provides for therotation of the shaft from a suitable source of power not shown. Rigidlysecured to the shaft 4 is a beveled drive gear 6 which is formed with aboss 7 on its outer face. A larger beveled gear 8 is loosely mountedupon the shaft 4 and is provided with concentric rows 9 and 10 of facialteeth. The innermost row 10 meshes with a beveled pinion 11 which isinterposed between the gears 6 and 8 and meshes with bot-h. A shaft 12is rigidly secured to a bearing 13 which is loosely mounted upon theshaft 4. A beveled gear 14 corresponding in size to the one 8 is looselymounted upon the shaft 4 and is provided with a countersink 15 upon itsinner face. The

boss '7 extends within the countersinkfand the rear face of the gear 6abuts the opposed face of the gear 14. Fixed to a bearing 16 that isloosely mounted upon the shaft 4 be-v Y tween the gears 6 and 8 is ashaft 17 upon which is loosely mounted the beveled pinion 11. A pinion1S meshes with the gears 8 and 14 and transmits motion from the gear 8to the gear 14. To hold the gears in contact and meshing position thegear 8 is held in place by a collar 19 fixed to the shaft 4. Y

A tubular shaft 20 carried by the gear 14 is mounted upon the shaft 4and the means to be operated with the apparatus is connected with theseshafts 4 and 20. The shaft 17 is journaled in a bearing 21 carried uponthe base 1, said shaft lying in the same plane as the shafts 4.Y v

A toothed quadrant 22 is carried by a standard 23V onthe base 1 andextends upward over the shaft 4. The shaft 20 serves as a handle orlever and is provided with a hand grip 24 on its outer end. Suitablelocking means 25 is carried upon the shaft 21 and cooperates with ytheVquadrant 22. The quadrant 22 is slotted and the shaft 2O engages in theslot so as to be guided vduring its movement. Y

As shown in the drawings, the shafts 4 and 2O have circular-shutterplates 26 and 27 secured thereto. These plates are of the type, such asused in motion picture cameras,

` each being notched as at 28,

VV hen-the shaft 4 is rotated clockwise,A as-` indicated by arroWs inthe drawings, the gear 6 rotates correspondingly and causes the pinion1l to rotate-counterclockwiseand the gear 8 which meshes with the pinionil. .tov

rotate counterclockwise also. The pinion 18'v which meshes withY thegear 8 rotates clock- Wise and 'transmits'this motion to the gear 14.The gear 14 is rigidlyconnectedwvithl the shaft 20 and it Will be seenthat the plate. 2T or any other member (notshovvn) connectedV With theshaft Will'berotated inzv clockwise direction. As the plate; 26'.Iisrigidly connectedirwiththe shaft 4 it Will :also be rotated in aclockwise direction.: Therefore the twoplatesl-26 and 27 are rotatedl intheifsamedirectionand at the same rate of speed.` When itisf'desiredto*V change the; relatli,fe'rotating` ,positionsof'thesef aplates.Without stopping the rotation ,theres of', thevlever or shaft 21 1s;movedwupprl downfrom theaposition shown mlh'gu2 of the: drawings,andthis brings thel plate26l onthe shaft into the Ldesired positionrel-a;

251tive" tothe platew27; This movement of the plfatef26is1hadduring therotation, of both plates andit Willi thus be seen that the two platesfcanwbexrotated at ithe-...same rate off' speed andthei-r positionschanged as.z def: sired Without changing the direction of 'rod tationbr;tlie speed of rotation of such plates. When-.the pinion 1l 'is movedlup or dovvndby theveorresponding movement ofy the'ishaft 21:,thezgear 6is rotated` and as it to rotate also; Itis through this: arrange-v mentthat the relative positions of the tivo shafts or, members rotated.thereby can be had.v

40 Referring'particularly to Fig. 4,-y the modified-.forni of myinvention comprises a drive,y

Collars 37. and 38 arepfixedto the'shaft 35 r and hold :the pinions 33andf34- in position.y

Abeveled gea-ry 39 is loosely mounted uponly 3 -and 34.A said gear v39being ofthe ysame diameter"andY opposite tothe gea-r. 32. Carried by`theageafr. 39 and integralV therewith'` preferably isa gear .40` whichmeshes with'` the shaft;35.j Axgear43 is looselyfmoufnted uponthe shaft29;,and is 'rigidly connected`V with the.'ftubularrvshaft' The gears@40'A and 43.5-also-the;pini-ons 42 and :4t are identi @tical with thosedesignated32,391aml335i 34e;

islfxed upon -the :shaft 4, Causes the shaft.

the shaft* 29` and meshes vv-ith vkthe ,pinions;

pinions 4l and 42 Ona shaft 42a. simila'nto;A

VThis gearing is so-constructed as; to rotate the shafts 29 and 3l inthe same direction and at the same rate of speed.

The" shaftL X259I extends V`beyond the outer end Yof the shaft 3l andfixed to the outer 70 end of the shaft 29 is a bearing block 44 throughwhich is extended a fixed shaft 45. Rotatably mounted upon the sha-ftl45 and on oppositesidesfof the block 44 are beveled gears 46 and 47 towhich are rigidly con- 75 neeted propeller -bladesv48wand v,4911 rlheYshaft 31 carriesa :beveled :gear 50j which meshcsavith andnis.y locatedbetweenvthe gears 46Sl and 4'?.

The shaft 35 iszjonrnaled in a horizontal ,80 iositionin .suitablebearings 5l,W`he1'feas the shaft 42a is' slidably monnted Within yanyVuplright slottedwtoothedu segmentp52.; This segment is similar to theone '22' in the pre-.- ferr-edformof myf *invention$ and the shaft; isextended .through the slotv and carriesya: h andle portion Y 531011 the;:outer en d thereof.A

v Av looking mea nsvisy carried by ,the shaft and 'y coperates withr thesegment to- :holdethe shaft in adjusted position.4 l Byr-movingthe yshaft lup and ldowninthe segment the pine. ions 41--42-are lilreivisemovedl and` canse the gea-r 43 *to-rotate..v Rotation of gea-raY 43turns the sha v3l; and!motientisgtrans-f mitted through the .gea-rs50,146 and-14'?v toy95` v they respective `blades 49 and 48. Thisyrota1ionof the lblades on their axes changethe elatlve vpositions thereofandniay beY effeeted during the rotation of theashaift 29'.. lt

i 7illbe seenthatthe blades operated. bythe 100 shafts 29 and 3l maybeniade to'assume the desired relative positions duringtheir` rotationWithout interferinglwith thei-r,ro tation or changing the1-speed'ofrotation@l thereof. This modified form: of my invenfA 1054 tionv is inall .respects identical with the preferred form except for theduplication; of the gears such'as shown in thehpreferred form..

lt is to `be, understood.` that if.' desired the-,110 shaft 35 Well asthe-.shaft 42?? mayibe movably lmoinrted' .upon thedeviee in order thatboth may be moved in the oppositeb direetions to effect thehshiftingeofthe dri-uen shafts as desired. The'mevement of `bothf'115 shafts willresultsin the, more rapid mevey ment of .the driven shaftsandinsthevpreferredf .form of the invention` :this farrangement may ,beyCarried out as -vvel-l'.'

l claim:

1. In anl-apparatusof, the Charactervdeiscribechg a .driven shaft,Abearings .for said; sha-ft, a member rotatedtby they "Shaft-and'connected th erewithia tubulan shaft mount: ed upon. thefrst shaft, amember Conneetedllzi with and adapted to be rotatedby said tubu-` larshaftameanstorotate .the shafts inzethe Same directionand at the` rate.efsnee meansftov change/.th-ei-relatve position .0f`Seid.hehehersrlnring.the rotatfenithereofilse 2. In an apparatus of thecharacter described, a driven shaft, bearings for said shaft, a tubularshaft mounted upon the first shaft, gearing connecting the shafts andadapted to rotate them at the same rate of speed and in the samedirection, and means associated with the gearing and shafts to changethe relative rotating positions of the shafts during the rotationthereof.

3. In an apparatus of the character described, a driven shaft, bearingsfor said shaft, a tubular shaft mounted upon the first shaft, a gearrigidly connected with the first shaft, a gear rigidly connected withthe tubular shaft, a gear meshing with said gears, a stationary shaftfor supporting said last named gear, another gear meshing with saidfirst and second named gears and being movable bodily relative thereto,a shaft for said last named gear, and means to adjustably support theshaft.

a. In an apparatus of the character described, a driven shaft, bearingsfor said shaft, a tubular shaft mounted upon the first shaft, a gearrigidly connected with the first shaft, a gear rigidly connected withthe tubular shaft, a gear meshing with said gears, a stationary shaftfor supportingsaid last named gear, another gear meshing with said firstand second named gears and being movable bodily relative thereto, ashaft for` said last named gear, means to adjustably support the shaft,and means to lock the last named shaft inadjusted position.

5. In an apparatus of the character described, a driven shaft, bearingsfor said shaft, a tubular shaft mounted upon the first shaft, a gearrigidly connected with the first shaft, a gear rigidly connected withthe tubular shaft, a gear meshing with said gears, a stationary shaftfor supporting said last named gear, another gear meshing with saidfirst and second named gears and being movable bodily relative thereto,a shaft for said last named gear, means to adjustably support the shaft,and bearings for said last named shafts mounted upon the first namedshaft between the first named gears.

6. In an apparatus of the character described, a driven shaft, bearingsfor said shaft, another shaft, a gear rigidly connected with each ofsaid shafts, means to connect said shafts for rotation in the samedirection and at the same speed operatively associated with said gears,a pinion located between and meshing with said gears, a shaft for saidpinions, and means to adjustably support the shaft.

7. In an apparatus of the character described, a drive shaft, bearingsfor said shaft, another shaft, a gear rigidly connected with each ofsaid shafts, means t0 connect said shafts for rotation in the samedirection and at the same speed operatively associated with said gears,a pinion located between and meshing with said gears, a shaft for saidpinion, means to adjustably support the shaft, and means to lock thelast named shaft in adjusted position.

8., In an apparatus of the character described, a drive shaft, bearingsfor said shaft, another shaft, a gear rigidly connected with each ofsaid shafts, means to connect said shafts for rotation in the samedirection and at the same speed operatively associated with said gears,a pinion located between and meshing with said gears, a shaft for saidpinion, means to adjustably support the shaft, and a bearing for saidlast named shat loosely mounted upon the first named sha t.

9. In an apparatus of the character described, a drive shaft, a supportfor said drive shaft, a tubular shaft rotatably mounted upon the driveshaft, a gear fixed to said drive shaft, a gear loosely mounted upon thedrive shaft and having concentric rows 0f teeth thereon, a pinioninterposed between said gears and meshing therewith, an adjustable shaftfor said pinion, a bearing for said vshaft rotatably mounted upon thefirst named shaft, said pinion meshing with the 'innermost row ofconcentric teeth, a gear fixedto said tubular shaft, and a pinionmeshing with .said second and last named gears.

Signed at Los Angeles, California, this 9th y day of August, 1916.

CHARLES MCCREARY. Witnesses:

Clins. J. CHUNN, MARY E. BLAsDEL.

Gopies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents, Washington, D. C.

